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Get yourself Smart!!Sun, 08 Apr 2018 09:07:32 +0000enhourly1https://wordpress.org/?v=4.7.5http://www.whatwhenwhowhy.com/wp-content/uploads/2016/02/wwww_Logo2-150x150.pngWhat When Who Whyhttp://www.whatwhenwhowhy.com
3232When Exactly is the Best Time to Brush Your Teeth?http://www.whatwhenwhowhy.com/general/when-exactly-is-the-best-time-to-brush-your-teeth/
http://www.whatwhenwhowhy.com/general/when-exactly-is-the-best-time-to-brush-your-teeth/#respondSun, 08 Apr 2018 09:07:32 +0000http://www.whatwhenwhowhy.com/?p=850When it comes to brushing your teeth, we all know that we should do so at least twice a day. But when exactly are the best times to brush your teeth? Right when you wake up? After breakfast? Right before bed?

A lot of this depends on what you eat, so we’ll go over when you should brush your teeth below.

Brushing After Breakfast?

Naturally, many people think that it’s a good idea to brush your teeth after breakfast, and it is, for the most part. Cleaning your teeth after a meal means that you clean off all the food particles and bacteria from your teeth. So what can go wrong? Well, that all depends on what you had for breakfast.

Are you partial to a bit of orange juice in the morning? Maybe half a grapefruit with a bit of sugar on top? Do you enjoy sugary breakfast cereals? These high acidic and sugar foods and drinks cause tooth enamel to weaken, so if you brush too soon after eating, you can cause some real damage to tooth enamel. This is because the bacterial acids in your mouth, fed on sugars, can cause the overall pH levels in your mouth to drop below normal, making your tooth enamel “softer” and more vulnerable to abrasion, even from your soft-bristled toothbrush. If you are aware of your desire for something acidic or sugary in the morning, the best thing to do would be to brush before you eat breakfast, or wait at least 30 minutes after your meal to brush.

Brush Before Breakfast

You might actually be better at preventing cavities if you brush before you have breakfast because then you’ll be removing as much bacteria as possible instead of “feeding” them. If you reduce the total number of bacteria in your mouth that can produce acid before you break your nightly fast, then you’ll limit how acidic your oral pH becomes. You’ll be introducing fluoride into the dental plaque fluid to reduce the damage bacteria can do to your teeth.

This doesn’t mean that you can’t clean your mouth after breakfast if you’ve brushed your teeth before. Simply use an alkaline rinse after breakfast or chew sugar-free gum to stimulate saliva production.

Brushing Before Bed

Sure, you can brush your teeth before dinner if you really want. But we do not advise going to bed without having brushed your teeth. Before bed is when you should floss, as well. Think of it as a way to really cleanse your teeth and gums of all the bad bacteria that has been accumulated throughout the day. More bacteria and plaque accumulates as you sleep, especially if you’re the type to sleep with your mouth open. This makes your mouth dry, which means that there is less saliva to wash the bacteria from your teeth.

]]>http://www.whatwhenwhowhy.com/general/when-exactly-is-the-best-time-to-brush-your-teeth/feed/0What is Whatsapp’s “Delete for Everyone” feature?http://www.whatwhenwhowhy.com/technology/what-is-whatsapps-delete-for-everyone-feature/
http://www.whatwhenwhowhy.com/technology/what-is-whatsapps-delete-for-everyone-feature/#respondMon, 06 Nov 2017 16:19:38 +0000http://www.whatwhenwhowhy.com/?p=817Whatsapp is the most widely used chat messenger which was launched in 2009 by Brian Acton and Jan Koum .This Facebook owned app has witnessed no. of upgrades post its launch. Numerous new features like blue tick, file sharing, sending locations, everyday status have already made it most preferred amongst the user. But the most awaited and talked about feature has finally been launched. The new feature ” Delete for Everyone”will now enable the users to delete the sent messages not only from their but also from receiver’s cell phone. Using this feature we can recall messages from one to one as well as group chats.

How to use this feature?

This feature is available only on the latest version of whatsapp. So, you need to make sure that you have the updated version.

Both the sender and receiver must have the updated version for this feature to work.

To delete a message, just long press the message and hit delete/trash button from top.

This would give three options- “Delete for Everyone” , “Delete for me” and Cancel.

“Delete for me” will just delete the message from your own cellphone while ” Delete for Everyone” will remove it from receiver’s phone as well.

Once a message is deleted using ” Delete for Everyone” it will be replaced by informational message stating ” This Message was deleted”.

This informational message will be visible on receiver’s cellphone as well, so recipient will also be aware if sender deletes a message.

This feature comes with 7 minute limit.

“Delete for Everyone” “Delete message”

7 minute limit for “Delete for Everyone”

The user will have to act pretty swiftly if they want to delete any sent messages as this new feature will let the messages to be deleted only within first 7 minutes once sent. Post 7 minutes this new feature will be disabled and all you will see is ” Delete for me” option.

This feature is available for all platforms be it Android, iPhone or Windows.

]]>http://www.whatwhenwhowhy.com/technology/what-is-whatsapps-delete-for-everyone-feature/feed/0Why do we sleep less with age?http://www.whatwhenwhowhy.com/medical/why-do-we-sleep-less-with-age/
http://www.whatwhenwhowhy.com/medical/why-do-we-sleep-less-with-age/#respondSat, 12 Aug 2017 14:58:25 +0000http://www.whatwhenwhowhy.com/?p=809Sleep is one of the most essential elements required to keep the human body fit. Each body organ needs enough rest to be able to function properly. During sleep the body gets the much required rest. While we were kids, we enjoyed a sound sleep of 7-8 hrs. But with age, we tend to sleep lesser. It is now a proven fact that the older we grow the lesser we sleep. There are numerous theories which illustrate the cause behind this phenomenon. Lets find out why we sleep less with age.

Before getting in depth of the theories lets first understand the stages involved in sleep.

Stage 1- Light Sleep

During this first stage, eyes movement slows, followed by slowing down of brain activity and muscles began to relax. A person can be easily woken from light sleep stage.

Stage 2- Deep Sleep

The body prepares to move into the stage of deepsleep. The eyemovement stops completely, brain and muscles activity even slows down. The body relaxes completely and heart rates slows.

Stage 3&4-Low wave sleep

Its a state of deep sleep and it gets hard to awake a person from this. The body gets maximum rest during deep sleep. Muscle repair and rest to all body organs is attained in this state of sleep.

REM : Rapid Eye Movement

As the name suggest the eyes remain closed but moves from side to side rapidly. This is when the dreaming occurs during the sleep. The brain is active but the muscles remain in relaxed state.

Why sleep goes down?

Sleep Architecture changes:
The primary reason responsible for decrease in sleep is the amount of time body remains in stage 3 & 4 deep sleep decreases. As we grow old, the body usually remains in light sleep stage and finds it hard to retain deep sleep stage due to no. of factors , dropping health , medication etc.

Timing of body function changes: Another vital reason is timing of circadian rhythms which controls the timing of different body functions. Its because of these changes we find our grand parents get sleepy in the evening and wake up early.

Neurological changes: In recent times, there have been no. of studies that links decrease in sleep with age to neuron changes in brain.

Some theories concludes that the neuron that transit signals to brain that body is sleepy reduces with time. Which is why older people doesn’t sleep enough as their brain cannot decide when the body is sleepy.
On the contrary, there have been theories which say that neurons remains constant throughout the life span while its the receptors in brain who read those neurons gets weak with age. You can consider this as an antenna which cannot catch the signal which is present.

Inspite knowing all these causes of why ages people find it tough to remain sleepy for long hours, there hasnt been a lot of remedies to cure this. People still rely in sleeping pills to get some extra hour of sleep. May be in coming years combined efforts of scientists and doctors may provide some effective remedy for this.

]]>http://www.whatwhenwhowhy.com/medical/why-do-we-sleep-less-with-age/feed/0When was first Automated Teller Machine (ATM) installed?http://www.whatwhenwhowhy.com/history/first-automated-teller-machine-atm-installed/
http://www.whatwhenwhowhy.com/history/first-automated-teller-machine-atm-installed/#respondThu, 20 Jul 2017 16:33:32 +0000http://www.whatwhenwhowhy.com/?p=804Unlike our forefathers, we have the privilege of not having to visit the bank each time we are in need of some handy cash. Thanks to Automated Teller Machine (ATM). Do you know when was the first ATM installed. Lets take a walk down the memory lane and find out who developed the first ATM and where was it installed.

The first Automated Teller Machine was installed on June 27, 1967 at Barclays branch in suburb of London. John Shepherd Barron who worked at De La Rue printing firm is believed to have come up with the idea of self service cash dispense machine. The reason behind him getting this idea is pretty interesting.

John usually visited the banks before the weekend to withdraw the visit. One fine day he got late to reach the bank and wasn’t able to withdraw the money. Back home , while in his bathtub he had this idea of why can’t there be machine that can dispense cash similar to chocolate vending machines. He decided to share this thought with the executive at Barclays bank. The bank accepted his idea and gave it a go ahead.

How did the first Automated Teller Machine worked?

To dispense cash from this first atm, one had to insert a cheque/ paper voucher which had radioactive inks printed on it. There was a pin mentioned on the cheque which was matched against the user’s bank account. Magentic coding was not developed at that time so plastic cards could not be used.

First ATM in US:
In United States, the first ATM was designed by Donald Wetzel which was installed in Sep, 1961. It worked on magnetic coding, hence plastic cards similar to the ones used today were used for transactions. This machine was deployed at Chemical branch of Long Island.

ATM recently completed 50 yrs, to celebrate this anniversary Barclays turned their first ATM into Gold.

First ATM turned into Gold

Some interesting facts about ATM

In 2017, there are more than 3 million ATMs. The no. is expected to cross 4 million by 2021.

India has over 2 lakh operational ATM as on 2017.

As per the availability of ATMs for every 1 lakh adults, South Korea has the max count i.e. 283 per 1 lakh adults.

Afganistan has least count i.e. .78 per 1 lakh adults.

India has around 18 atms per 1 lakh people.

]]>http://www.whatwhenwhowhy.com/history/first-automated-teller-machine-atm-installed/feed/0Why do we have tears while crying?http://www.whatwhenwhowhy.com/medical/why-do-we-have-tears-while-crying/
http://www.whatwhenwhowhy.com/medical/why-do-we-have-tears-while-crying/#respondFri, 07 Jul 2017 16:49:37 +0000http://www.whatwhenwhowhy.com/?p=800We humans are emotional creatures and this is what separates us from other living beings. Emotions creates all sorts of feelings which can bring us joy , sadness , irritation, frustration , jubilation etc. Among these , Happiness and distress tends to be on top of the list. We all cry while in pain or distress. But have you ever pondered upon the fact that why do we get tears while crying. How does our eyes get to know that it has to shed tears whenever we are emotional. Continue reading to know more about it.

What are tears?

Tears are created by lacrimal gland which are located between the eyeball and eyelid. A tear consist of three layer which includes oil , water and mucus. Water content in tear is maximum while the oil ensures in keeping the eyes moist. A tear is produced in human eye irrespective of whether we cry or not. They get drained off through the tiny openings in our eyelid and goes out as part of our nasal fluid.

Types of Tears

There are three types of tears – Basal , Reflex and Emotional.

Basal are the ones which are produced in the eyes at all times and help to nourish and moist our eyes.

Reflex are produced due to protective actions against external particles or irritants which is why eyes get wet while cutting onions.

Emotional comes out while we are sad or happy. They are dependent on human emotions.

How does our tear producing system activate?

Just as with any other body organ, brain has a direct link which instructs it when to produce tears. A part of human brain called the limbic system takes care of all human emotions. Whenever we are emotional, brain sends signals to the lacrimal gland(which produce tears) via neurotransmitter known as Acetylcholine & instructs it to start producing tears. Acetylcholine is an organic chemical released by nerve cells used in sending signals to different body cells.
The composition of emotional tear is high on proteins. It contains prolactin and leucine enkephalin which is a natural pain killer. Thats the reasoning behind why we feel better after crying.

Importance of tear:

Helps in vision by providing essential nutrients and oxygen.

Keeps eyes lubricate

Flush debris and bacteria.

]]>http://www.whatwhenwhowhy.com/medical/why-do-we-have-tears-while-crying/feed/0What is Bitcoin currency?http://www.whatwhenwhowhy.com/uncategorized/what-is-bitcoin-currency/
http://www.whatwhenwhowhy.com/uncategorized/what-is-bitcoin-currency/#respondMon, 05 Jun 2017 16:34:36 +0000http://www.whatwhenwhowhy.com/?p=795Bitcoin currency is world’s first decentralized virtual currency , a digital money which is transferred from one person to other via online network. As its digital , it can’t be obtained physically rather it remains in your online wallet. Its an open source software, which uses peer to peer technology to perform the transactions. Bitcoin software uses Encryption techniques to generate the units of currency.
As bitcoin is decentralized there is no controlling body or authority which governs the bitcoin network.
Bitcoin software was developed in 2009 by Satoshi Nakamoto. Not much is known about the identity of Satoshi. Infact, multiple people have claimed to be Satoshi, it isn’t sure who the real person is.

1 Bitcoin = 167867.91 Indian Rupee

1 Bitcoin = 2609.46 US Dollar

Working of Bitcoin

Just download the bitcoin app on your mobile or computer , sign up and it would generate your bitcoin wallet address. This is somewhat similar to email id. To receive money from someone you just need to provide them your wallet address.

From the technical front, Bitcoin uses cryptography technology to make the transactions secure, authentic and transparent. Bitcoin uses a public ledger which stores each and every confirmed transaction. Its a kind of database which holds all approved transactions. This public ledger is known asBlock Chain.

Now, the question arises who approves these transactions since there isn’t any third party involvement.
Whenever a bitcoin transaction occurs, bitcoin wallet attaches a mathematical equation to it which serves as a digital signature. This ensures the authenticity of the transactions. For approving these transactions, there is a group of coders called miners who tries to solve the mathematical equation attached to the transaction. As soon as the equation is decoded, the transaction is considered approved and entry for that is made in block chain. This process of approving the transaction by decoding the equation is known as mining. Anyone who performs the decoding successfully gets a reward in form of bitcoin. Mining involves the use of the computing power for decoding these equations.

Bitcoin Value

Some other facts about Bitcoin Currency

No controlling body.

Transaction can happen 24*7, even of weekends and public holidays.

The process is transparent and each transaction log is available in block chain

This new online payment system is still not accepted in most of countries.

The value of bitcoin fluctuate more as compared to other units of currency as there isn’t a governing body. So more the demand higher goes the bitcoin value.

]]>http://www.whatwhenwhowhy.com/uncategorized/what-is-bitcoin-currency/feed/0Why is Labor Day celebrated?http://www.whatwhenwhowhy.com/uncategorized/labor-day-celebrated/
http://www.whatwhenwhowhy.com/uncategorized/labor-day-celebrated/#respondThu, 18 May 2017 16:05:55 +0000http://www.whatwhenwhowhy.com/?p=791On 1st May most of the countries around the world have holiday on the eve of Labor Day. We gleefully accept the day off but very few of us know the history behind it. Lets find out why do we actually celebrate it.

When & Why it was started:

The existence of Labor day goes all the way back to 19th Century. On 1st May 1886, United States Labor union went to strike demanding that the daily work shift should be fixed to eight hours of work each day. Eight hours of work , eight hours of recreation and eight hours of rest. Following the strike, on May 4th bomb was thrown by anarchist in Chicago which led to killing of dozens of labors and injuring hundreds of them.

The demands of labors were turned down initially but as the protest continued, eventually eight hours work rule came into effect. As the strike was started on May 1st, lot of countries began to celebrate it as Labor day to show their respect and tribute to labors who struggled and lost their lives during this movement.

Some facts of Labor Day:

It is celebrated in more than 80 countries.

In India , Labor Day was started on May 1 , 1923.

Russian Federation, China , Thailand, Vietnam, India and other Asian countries celebrate it on May 1.

Australia , Canada and US celebrate it on first Monday of September.

]]>http://www.whatwhenwhowhy.com/uncategorized/labor-day-celebrated/feed/0Why don’t eyebrows and eyelashes grow like head hairs?http://www.whatwhenwhowhy.com/medical/dont-eyebrows-eyelashes-grow-like-head-hairs/
http://www.whatwhenwhowhy.com/medical/dont-eyebrows-eyelashes-grow-like-head-hairs/#respondSun, 16 Apr 2017 10:05:48 +0000http://www.whatwhenwhowhy.com/?p=748Most of us have to visit the saloons once in every two months to get our head hairs trimmed off. Keeping them in check is of utmost importance because our hairstyle plays a key role in our overall appearance. But when its about our eyebrows and eyelashes do you actually remember when was the last time you had to trim them. Probably No. That’s because unlike head hairs they don’t grow beyond a certain length.
Have you ever thought why is that so? Why don’t eyebrows and eyelashes keep on growing just like our hairs on head. Lets reveal the secret behind this.

For understanding this, let us first go through the stages involved in hair growth in human beings. There are three different stages- Anagen, Catagen and Telogen.

Anagen Phase:

It’s the first stage which is most active which is why this is also termed as growing stage. The cells at the root of the hair divides rapidly causing the hair to grow. During this phase , the hairs can grow upto 1 cm in a span of 28 days.

Catagen Phase:

The next stage is the catagen phase in which the growing of the hair strands stops. The hair follicle doesn’t get the blood supply necessary for the growth of hair strand.

Telogen Phase:

This is the last stage also known as resting stage where the hair follicle does nothing and the hairs in this stage are considered to have attained their maximum length. After remaining in this stage for few days / weeks the hairs finally began to shed away.

So, hairs throughout the human body follows these phases but the only thing that differs is the amount of time they remain in each phase.

Knowing about the hair stages would now be helpful in understanding the fact behind the growth of eyebrows.

Growth of eyebrows/eyelashes

The growth of the hairs depend on how much time do they remain in the growing stage which is Anagen. Hairs on the head remain in the anagen phase for maximum span of time which may last between 2-7 yrs while the eyebrow and eyelashes stay in Anagen only for few months after which they stop growing. This is the primary reason why they don’t grow beyond a certain length.

]]>http://www.whatwhenwhowhy.com/medical/dont-eyebrows-eyelashes-grow-like-head-hairs/feed/0What is Artificial Rainfall ?http://www.whatwhenwhowhy.com/science/what-is-artificial-rain/
http://www.whatwhenwhowhy.com/science/what-is-artificial-rain/#respondSun, 16 Apr 2017 09:58:18 +0000http://www.whatwhenwhowhy.com/?p=774“Rainfall”, the most beautiful gift of nature. When it pours, we tend to sit back , relax and enjoy the melody of water drops falling on the ground. Rainfall is one of the necessities for all living beings on earth to survive. In the recent past, due to ecological imbalance, chopping of trees & increase in pollution, the amount of rainfall received each year is alarmingly going down. No. of countries have to encounter the situation of drought which causes extreme shortage of water essential for human beings and plants. What is someone says, rainfall is not only natural rather it can artificially made to happen. You would find it hard to believe , isn’t it. But it is true. There exist something known as Artificial Rainfall.

To tackle this situation of drought, technology is being used to increase the amount of rainfall especially in the regions which are facing scarcity of rain. This concept of using technology to cause the rainfall is known as artificial rainfall.

Artificial Rainfall:

Artificial Rain is the use of technology to cause rain. External agents such as chemicals are sprayed on the clouds to create more ice crystals and cause more moisture out of the clouds. It is effective way to increase the amount of rainfall by 15-20%.
There are three stages involved in the formation of artificial rain. Lets take a look at them.

Agitation:

Just like natural rain, the presence of cloud is necessary requirement to cause the rain artificially. Agitation is the first stage where the focus is on building up the clouds. Chemicals such as calcium oxide, calcium carbide , urea, compound of salt absorb the water vapor from he air mass and stimulate the air mass upwind to form clouds.

Building-up stage:

Second stage is the building-up stage which focuses on increasing the density of the clouds. Chemicals like urea, ammonium nitrate, dry ice tend to increase nuclei which increase the cloud density.

Cloud Seeding:

Final stage involves bombardment of super-cooled agents, silver iodide and dry ice which form large ice crystals & droplets of water and make them fall down in the form of rain. Airplanes are used to spray these agents on the clouds. As these agents are super-cooled , when they fall on the clouds they reduce the temperature of water inside the cloud which turns them into ice crystals. When these ice crystals become large in size, cloud is no longer able to hold them and they fall to earth in the form of small icy pellets. They usually melt and form rain when they fall on area where temperature is above zero degree Celsius.

]]>http://www.whatwhenwhowhy.com/science/what-is-artificial-rain/feed/0Why do we feel hungry?http://www.whatwhenwhowhy.com/medical/why-do-we-feel-hungry/
http://www.whatwhenwhowhy.com/medical/why-do-we-feel-hungry/#respondTue, 21 Feb 2017 05:57:24 +0000http://www.whatwhenwhowhy.com/?p=750We can resist most of our feelings, be it anger, irritation , frustation or even happiness but when it comes to hunger pangs it gets really hard to control it for long. While we are hungry, we would need something to eat. Have you ever wondered why do we feel hungry and how does our body get to know that its time to eat. Lets find out.

Simply put, whenever the level of nutrients like fat , proteins and carbohydrates drops down below a certain threshold in blood, our brain senses it and makes you feel hungry. Brain sends the signal to the body that its low on energy and must consume some calories.

Now who decides this threshold of energy and how does the brain sends the hunger signals?
Certain hormones in our body plays the vital role in deciding when the body is hungry and how much to eat. Leptin and Ghrelin are two major hormones which influence the level of our hunger.

Ghrelin (Causes the feeling of being hungry):

Whenever the fat level drops , the brain releases the Ghrelin hormone which causes the hungry feeling. Sometimes, while we are hungry the stomach creates the gurgling noise which is because the digestive juices are secreted but the stomach is empty so nothing to digest and hence the stomach contracts. So, its the Ghrelin hormone which is necessary to arise the feeling of being hungry.

Leptin (tells the body when to stop eating) :

Leptin is the hormone which sends the message to the brain when to stop eating. Leptin, also known as “fat hormone” decides the energy threshold. So, if the Leptin is above the threshold, the brain gets to know that there is enough energy in the body and sends out signals indicating to stop eating which is why we get the feeling of fullness. Whenever, the Leptin goes below the threshold and brain senses it as low energy and we feel hungry.

Apart from these two hormones which play major role , there are few other cells residing in our intestine and colon which not only keep track of our nutrients level but also send signals to the brain when we eat something. So, this enables the brain to know when did we last eat.